package ebcs.scan.interceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

/**
 * 用户登录拦截器
 * @author csd
 *
 */
public class LoginInterceptor implements HandlerInterceptor{

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
		// TODO Auto-generated method stub
		
	}

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
		//获取用户登录标识
		HttpSession session = request.getSession();
		
		Object obj = session.getAttribute("loginUser");
		if(obj == null){
			request.getRequestDispatcher("../../WEB-INF/view/jsp/main/mainLogin.jsp").forward(request, response);
			return false;
		}
		return true;
	}

	
}
